html {
  font-size: 14px;
  position: relative;
  min-height: 100%;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
  margin-bottom: 60px;
}

.footer {
  position: absolute;
  bottom: 0;
  width: 100%;
  white-space: nowrap;
  line-height: 60px;
}

/* Custom styles */
.card {
  border-radius: 0.5rem;
}

.btn {
  border-radius: 0.375rem;
}

.table th {
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.875rem;
  color: #6c757d;
}

.navbar-brand {
  font-weight: 600;
  font-size: 1.5rem;
}

.display-4 {
  font-weight: 600;
}

/* Animations */
.card {
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15) !important;
}

.btn {
  transition: all 0.2s;
}

/* Loading states */
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}